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Top-Rated Air conditioning pros in Lagunitas-Forest Knolls - Updated Nov 2026

Avatar for Next Level Heating & Air Conditioning, Inc.
Next Level Heating & Air Conditioning, Inc.
4.9(
78
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"They were great! Our furnace was acting up during the cold snap and we had no heat. Charlie came right over, quickly diagnosed the problem and had it fixed within a day. Very professional and customer focused - we highly recommend Next Level."
Response time1 day
15 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Elevated Comfort
Elevated Comfort
4.7(
45
)
Central A/C - InstallCentral A/C - Service or RepairCentral A/C - Install - For Business+2 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"It's been a couple months since Zach with McDonald's Home Solutions analyzed our air-conditioning needs and had Potts and Vince install the Mitsubishi heat pump and duct work. They were amazing and very hard working. The system is working great and makes a huge difference in the comfort level of our house. It's extremely quiet. It operates like a whisper and we hardly know it's on other than the house is cooler. I checked the energy use of the system against our solar panel productions and it hardly makes a difference. It's amazingly efficient. I strongly recommend anyone considering installation of an HVAC system to use McDonald's Home Solutions. They're the best."
Furnace
Furnace
Tankless Water Heater
Bosch Heat Pump
Equipment Installs

+2

Response time5 hrs
Response rate100%
66 neighbors recently requested a quote
Avatar for Enviro Heating & Air Conditioning Inc.
Enviro Heating & Air Conditioning Inc.
4.5(
45
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

Enviro Heating & Air Conditioning Inc. is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. \n

33 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Moore Home Services
Moore Home Services
4.4(
225
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Starting with JP the senior technician, the inspection and documentation of existing conditions was thorough, knowledgeable, and complete. Moore recommended the replacement system that would be more durable and require lower maintenance over time, and wrote a detailed proposal with a floor plan documentation. We were given financing options at the time of signing the agreement, as well. The team- five technicians!- were properly suited with protective gear and followed COVID protocols at all times on our property, inside and out. They wore shoe protectors while inside, kept us fully appraised at every task (all interior registers replaced in 11 rooms), and were extremely respectful of our space, privacy, pets, and kept noise and speaking to low levels. (our extremely friendly indoor cat got lots of attention from the team!) The work required three days to fully replace all ductwork in a two-story home with attic and crawl space, and Paul the team leader would check in with us each morning with a briefing of each days' activities. The entire team was constantly in learning mode, with the senior technicians mentoring and teaching the younger team members, which greatly impressed me. They finished on time and without any delay or disruption; they cleaned each work area and removed all debris, packaging, and the old system. We've owned this house for 20 years, had many repairs and replacements, and Moore has raised the bar so far for quality and value. While they were the middle bid in terms of overall cost, we believe we received higher value that even the highest bid. I can strongly recommend them to anyone planning repair work on their existing system, new installations, or maintenance. After getting few responses from HVAC contractors working in new homes in Sonoma County, we were pleased to know that Moore specializes in existing homes and responded to our online request within minutes. I'd be happy to share my experience in person, if required. Martin Waldron Sebastopol, CA"
After 1
 View 1
 Right Side View
Perfect Retrofit
After 2

+15

23 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Green Core Heating & Air
Green Core Heating & Air
5.0(
8
)
Central A/C - InstallCentral A/C - Service or Repair

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"Green Core HVAC was awesome to work with! The team did a great job helping us pick the perfect AC unit for our home. They showed up on time, got the new AC installed quickly, and left the place spotless. Our house is cooler and more comfortable than it’s ever been. You can tell these guys really care about doing a great job. I’d 100% recommend Green Core to anyone needing AC work. Super professional, super friendly, and they really know what they’re doing!"
Air Conditioning Install
Harvest Thermal
Harvest Thermal
7 neighbors recently requested a quote
Avatar for American Heating & Air, LLC
American Heating & Air, LLC
5.0(
14
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+2 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2021

Warranties offered

Offers commercial services

"Ricardo was incredibly attentive and punctual. He was very honest about what needed to be done and he arrived on time as agreed upon and did an immaculate job. Would highly recommend him for any heating or air jobs. Thank you, Ricardo, for giving us heat again during this very cold winter!"
Old Condenser
Old Furnace
Furnace Replacement
Condenser Replacement
Response time1 day
Response rate97%
13 neighbors recently requested a quote
Avatar for Comfort Factor Mechanical, Inc
Comfort Factor Mechanical, Inc
5.0(
12
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business+2 more

Serving Lagunitas-Forest Knolls, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Comfort Factor Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. \n\n\n

System replacement
Mini split install
Mini split install
Mini split install
Mini split install

+18

9 neighbors recently requested a quote
Recommended by8%of homeowners
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Showing 1-10 of 160
Air Conditioning FAQs, answered by experts

If your AC suddenly stops working, the first thing to check is your thermostat settings. Ensure the thermostat is set to the appropriate temperature and mode (cooling). Sometimes, a simple adjustment or replacing the batteries in the thermostat can resolve the issue. If that’s not the issue, look to see if the circuit breaker tripped. These basic checks can often identify simple fixes before you need to call for professional assistance.

No, you should not run an air conditioner with a Freon leak. If you think your AC unit is leaking refrigerant, shut it off immediately. When you keep using a leaky air conditioner, it could damage the unit and release more refrigerant. After turning off the AC, have an HVAC pro come take a look at the unit.

Window ACs use 500 to 1,400 watts per hour of electricity, while mini-splits use 500 to 700 watts per hour. However, if you need to cool multiple zones in your house, your mini-split can use as much as 2,000 watts per hour. How often you run your system will impact how much electricity you use (and how much you pay per month).

The cost to repair an air conditioner averages around $350 to $450, but the price can range from $100 to over $3,000. The final cost depends on the type of air conditioner, the extent of the damage, and the specific parts that need replacement. For example, repairing a window AC unit typically costs between $100 and $250, while central air conditioner repairs can range from $300 to $3,000. A simple fix like replacing a dirty filter might only cost $10 to $50, but a major issue like a broken compressor could cost around $2,000 or more, potentially making it more cost-effective to replace the entire system. Due to the need for specialty tools and handling of refrigerants, repairs more complex than changing a filter are best left to a professional.

There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

  • Unusual noises during operation

  • AC unit blows warm air

  • AC unit doesn’t come on or turn off with temperature changes

  • Strange odors come through the vents

  • AC unit cycles on and off rapidly

  • Indoor air is more humid or less comfortable than usual

  • AC unit keeps tripping your breaker

  • Fan in the outdoor compressor doesn’t operate when the AC is on

The Lagunitas-Forest Knolls, CA homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.